Are you curious about the night sky? Come to the planetarium at the Museum in DC for a live, guided tour of what you can see after sunset. The facilitator will answer questions and customize the ...

Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what you’ll need to catch a glimpse.

Comet 3I/ATLAS, the third interstellar object ever detected, will swing closest to Earth overnight from Thursday to Friday (Dec. 18 to 19). Here’s how to see it.

On Saturday night, Jan. 24, the curved terminator on the moon will fall just to the upper left (or lunar west) of a large, ...

The month brings a strong lineup of celestial sights, including a supermoon, meteor activity, and several close moon-planet ...